Hand washing has certainly come to the forefront these days, and rightfully so. The experts say frequent and thorough hand washing is the most important thing you can do for defense against Covid-19. And it’s been an important health action for many decades, but this hasn’t always been the case. For thousands of years people were getting sick or dying from contamination spread by unclean hands, but no one knew anything about bacteria or viruses and such. The first glimmer that clean hands were a big deal occurred in 1847 in an unusual manner.